Looking for Ashworth or Sturm family members in New Zealand

My paternal grandparents were Mabel Ashworth and Cyril Raffles Sturm. Are any descendants of these two or any other relatives able to help fill in some gaps for me? I don't know anything about my grandmother's family. I know the names of this couple's children but not much beyond that. I know I have many cousins but do not know their names.

my mother is the last surviving child of Mabel and Cyril Sturm-Myrtle Sturm ( (married name Morgan) She is 91 years of age.I can porvide some information about Cyril if you have not already received it